@proband nice to see that some people still like to fix their older devices. iFixit does not have a specific guide for this, so use the video [https://www.youtube.com/watch?v=QD_VbJxRBOc|from here] Replacement displays are still available at some online places.
While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.
Repair is War on Entropy!